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Higgs & Top at LHeC
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CERN
CERN
Description
CERN - Tokyo - Liverpool - Johannesburg - Beijing - Hamburg
- Satoshi presented updated coupling errors for Higgs to invisible using one effective coupling. Using a cut based analysis the 95.4%C.L. (2 sigma) coupling uncertainties are already comparable with HL-LHC BDT-based analysis reaching its best uncertainty for H(125)->Etmiss of 2% for FCC-he. We discussed why his BDT based coupling results are so close to the cut-based ones. Satoshi wanted to think about other distributions that he may add and that may increase the sensitivity of ep-colliders to this search even further. We also suggested to consider 3 and 5 sigma limits to have them at hand for comparisons in case.
==> results are good candidates for FCC week at CERN
- Uta showed various benchmarks done in Liverpool using the exotic Higgs decay model from Chen and Ye-Lei. Robustness of results versus the various MG5 versions are confirmed, and
we should only change the version if terse is really an advantage (e.g. like PHP in MG5 2.1.2 onwards) since version changes usually require also a new pythia-pgs. Benchmark for exotic Higgs decay is close to be finished and full detector-level studies will start soon -> also for FCC week.
- Orhan gave a nice overview about potential top-u-gamma and top-c-gamma coupling measurements. The framework is prepared and ready for LHeC detector studies, so far studies done with ATLAS detector.
==> good study for the FCC week
We all agreed that is important to check the delphes card file for this next round.
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